Medium severity · published Oct 15, 2026
CVE-2026-111166
libmikmod through 3.3.15 Heap Out-of-Bounds Read via IMF_Load
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
libmikmod through 3.3.15 contains a heap out-of-bounds read vulnerability in the IMF_Load() loader that allows attackers to read beyond allocated memory by supplying a crafted IMF module. Attackers can enable the linear-period header flag and map notes to out-of-range samples, causing noteindex indexing far past the heap allocation and crashing applications that load the file.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libmikmod · sezero
through 3.3.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111166
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111166
github.com
https://github.com/sezero/mikmod
github.com
https://github.com/sezero/mikmod/blob/6e658155f7e6b394a288dac796ba572634553fad/libmikmod/loaders/load_imf.c#L702-L712
hackmd.io
https://hackmd.io/@haind-pwn/libmikmod-mtm-imf-loader-oob-read
www.vulncheck.com
https://www.vulncheck.com/advisories/libmikmod-through-3.3.15-heap-out-of-bounds-read-via-imf-load
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